Your submission was sent successfully! Close

You have successfully unsubscribed! Close

Thank you for signing up for our newsletter!
In these regular emails you will find the latest updates about Ubuntu and upcoming events where you can meet our team.Close

LSN-0094-1: Kernel Live Patch Security Notice

18 April 2023

Several security issues were fixed in the kernel.

Releases

Software Description

  • aws - Linux kernel for Amazon Web Services (AWS) systems - (>= 4.15.0-1054, >= 4.15.0-1119, >= 5.4.0-1009, >= 5.4.0-1061, >= 5.15.0-1000)
  • aws-5.15 - Linux kernel for Amazon Web Services (AWS) systems - (>= 5.15.0-1000)
  • aws-5.4 - Linux kernel for Amazon Web Services (AWS) systems - (>= 5.4.0-1069)
  • aws-hwe - Linux kernel for Amazon Web Services (AWS-HWE) systems - (>= 4.15.0-1126)
  • azure - Linux kernel for Microsoft Azure Cloud systems - (>= 5.4.0-1010, >= 5.15.0-1000, >= 4.15.0-1063, >= 4.15.0-1078, >= 4.15.0-1114)
  • azure-4.15 - Linux kernel for Microsoft Azure Cloud systems - (>= 4.15.0-1115)
  • azure-5.4 - Linux kernel for Microsoft Azure cloud systems - (>= 5.4.0-1069)
  • gcp - Linux kernel for Google Cloud Platform (GCP) systems - (>= 5.4.0-1009, >= 5.15.0-1000, >= 4.15.0-1118)
  • gcp-4.15 - Linux kernel for Google Cloud Platform (GCP) systems - (>= 4.15.0-1121)
  • gcp-5.15 - Linux kernel for Google Cloud Platform (GCP) systems - (>= 5.15.0-1000)
  • gcp-5.4 - Linux kernel for Google Cloud Platform (GCP) systems - (>= 5.4.0-1069)
  • generic-4.15 - Linux hardware enablement (HWE) kernel - (>= 4.15.0-69, >= 4.15.0-143, >= 4.15.0-69)
  • generic-5.4 - Linux kernel - (>= 5.4.0-26, >= 5.4.0-26)
  • gke - Linux kernel for Google Container Engine (GKE) systems - (>= 5.4.0-1033, >= 5.15.0-1000)
  • gke-4.15 - Linux kernel for Google Container Engine (GKE) systems - (>= 4.15.0-1076)
  • gke-5.15 - Linux kernel for Google Container Engine (GKE) systems - (>= 5.15.0-1000)
  • gke-5.4 - Linux kernel for Google Container Engine (GKE) systems - (>= 5.4.0-1009)
  • gkeop - Linux kernel for Google Container Engine (GKE) systems - (>= 5.4.0-1009)
  • gkeop-5.4 - Linux kernel for Google Container Engine (GKE) systems - (>= 5.4.0-1007)
  • ibm - Linux kernel for IBM cloud systems - (>= 5.4.0-1009, >= 5.15.0-1000)
  • ibm-5.4 - Linux kernel for IBM cloud systems - (>= 5.4.0-1009)
  • linux - Linux kernel - (>= 5.15.0-24)
  • lowlatency-4.15 - Linux hardware enablement (HWE) kernel - (>= 4.15.0-69, >= 4.15.0-143, >= 4.15.0-69)
  • lowlatency-5.4 - Linux kernel - (>= 5.4.0-26, >= 5.4.0-26)
  • oem - Linux kernel for OEM systems - (>= 4.15.0-1063)

Details

Lin Ma discovered a race condition in the io_uring subsystem in the Linux
kernel, leading to a null pointer dereference vulnerability. A local
attacker could use this to cause a denial of service (system crash).(CVE-2023-0468)

It was discovered that the Traffic-Control Index (TCINDEX) implementation
in the Linux kernel contained a use-after-free vulnerability. A local
attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code.(CVE-2023-1281)

Checking update status

The problem can be corrected in these Livepatch versions:

Kernel type 22.04 20.04 18.04 16.04
aws 94.1 94.1 94.1
aws-5.15 94.1
aws-5.4 94.1
aws-hwe 94.1
azure 94.1 94.1 94.1
azure-4.15 94.1
azure-5.4 94.1
gcp 94.1 94.1 94.1
gcp-4.15 94.1
gcp-5.15 94.1
gcp-5.4 94.1
generic-4.15 94.1 94.1
generic-5.4 94.1 94.1
gke 94.1 94.1
gke-4.15 94.1
gke-5.15 94.1
gke-5.4 94.1
gkeop 94.1
gkeop-5.4 94.1
ibm 94.1 94.1
ibm-5.4 94.1
linux 94.1
lowlatency-4.15 94.1 94.1
lowlatency-5.4 94.1 94.1
oem 94.1

To check your kernel type and Livepatch version, enter this command:

canonical-livepatch status